"Nequa; or, The Problem of the Ages" by Alcanoan O. Grigsby and Mary P. Lowe is a novel published in 1900. One of America's first feminist science fiction works, it follows Jack Adams—secretly a woman named Cassie disguised as a man—on an Arctic voyage searching for her betrothed. When their ship sails beyond the North Pole, they discover a passage into the hollow Earth, encountering the Altrurians, an advanced cooperative society. This utopian tale blends adventure with Populist politics and challenges conventional gender roles. (This is an automatically generated summary.)